C.F. Martin Guitars MA550T Lifespan 2.0 Medium Phosphor Bronze Acoustic Guitar Strings .013 -.056 Strings An industry standard for performance

An industry standard for performance and recording

and Reverse reverb for the sonically adventurous

open tones for maximum resonance and sustain

booming tone and comfortable feel

C.F. Martin Guitars MA550T Lifespan 2.0 Medium Phosphor Bronze Acoustic Guitar Strings .013 -.056 Strings An industry standard for performanceMartin's next generation Lifespan 2. 0 strings are engineered using a new, patented technology only available from Martin. This technology was developed to protect the core wire and the wrap wire to prevent corrosion without compromising tone the single most important attribute of the guitar strings. Authentic Acoustic Lifespan 2. 0 strings look better, sound better, and feel better, providing a smooth playing experience that reduces finger drag. We